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3850 Watertown Road
<br /> 3850 Watertown Road Type I124-hr 90-YR RainfaN=4.25"
<br /> Prepared by Sunde Engineering, PLLC. Printed 1/6/2015
<br /> HvdroCAD�10 DO s/n 02350 �2013 HydroCAD Software Solutions LLC _ _��
<br /> Summary for Subcatchment 5S:
<br /> Runoff = 36.33 cfs � 12.14 hrs, Volume= 2.807 af, Depth= 1.64"
<br /> Runoff by SCS TR-20 method, UH=SCS,Weighted-CN,Time Span=0.00-72.00 hrs,dt=0.05 hrs
<br /> Type II 24hr 10-YR Rainfal1=4.25"
<br /> Area (sfl CN Description
<br /> * 76,065 98 Impervious
<br /> 19,840 85 Gravel roads, HSG B
<br /> 580,635 69 Pasture/grassland/range, Fair, HSG B
<br /> 87,908 60 Woads, Fair, HSG B
<br /> 131,542 79 50-75°�6 Grass cover, Fair, HSG C_ _ ___
<br /> 895,990 72 Weighted Average
<br /> 819,925 91.51% Pervlous A�eB
<br /> 76,U65 8.�49% lmpervious Area
<br /> Tc Length Slape Velocity Capacity DescnpUon
<br /> (min} {feet) (fUft) lft/sec) (cfs)
<br /> 2Q.p Direct Entry,Assumed
<br /> Summary for Subcatchment 10S:
<br /> Runoff - 36.33 cfs @ 12.14 hrs, Volume= 2.807 af, Depth= 1.64"
<br /> Runoff by SCS TR-20 method, UH=SCS,Weighted-CN, Time Span= 0.00-72.00 hrs,dt= 0.05 hrs
<br /> Type II 24-hr 10-YR Rainfa11=4.25"
<br /> Area (s� CN Descriptian
<br /> * 76,065 98 Impervious
<br /> 19,840 85 Gravel roads, HSG B
<br /> 580,635 69 Pastur�e/grassland/range, Fair, HSG B
<br /> 87,908 60 Woods, Fair, HSG B
<br /> 131 542 79 50-75% Grass cover, Fair, HSG C _
<br /> � 895,990 72 Weighted Average
<br /> 819,925 91.51% Pervious Area
<br /> 76,065 8.49% Impervious Area
<br /> Tc Length Slope Velocity Capacity Description
<br /> min feet ft1Ft ft/sec cfs
<br /> 2p,0 Direct Entry,Assumed
<br /> Summary for Subcatchment 115:
<br /> Runoff = 36.33 cFs � 12.14 hrs, Volume= 2.807 af, Depth= 1.54"
<br /> Runofi by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span=0.00-72.00 hrs, dt= 0.05 hrs
<br /> Type I I 24-hr '{0-YR Rair�fall=4.25"
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